//
// CollectionViewGroup.cs
//
// Contact:
// Moonlight List (moonlight-list@lists.ximian.com)
//
// Copyright 2010 Novell, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections.ObjectModel;
using System.ComponentModel;
namespace System.Windows.Data{
public abstract class CollectionViewGroup : INotifyPropertyChanged {
protected event PropertyChangedEventHandler PropertyChanged;
event PropertyChangedEventHandler System.ComponentModel.INotifyPropertyChanged.PropertyChanged {
add { PropertyChanged += value; }
remove { PropertyChanged -= value; }
}
public abstract bool IsBottomLevel {
get;
}
public int ItemCount {
get; private set;
}
public object Name {
get; private set;
}
protected int ProtectedItemCount {
get {
return ItemCount;
}
set {
if (ItemCount != value) {
ItemCount = value;
OnPropertyChanged (new PropertyChangedEventArgs ("ItemCount"));
}
}
}
protected ObservableCollection<object> ProtectedItems {
get; private set;
}
public ReadOnlyObservableCollection<object> Items {
get; private set;
}
protected CollectionViewGroup (object name)
{
Name = name;
ProtectedItems = new ObservableCollection<object> ();
Items = new ReadOnlyObservableCollection<object> (ProtectedItems);
}
protected virtual void OnPropertyChanged (PropertyChangedEventArgs e)
{
var h = PropertyChanged;
if (h != null)
h (this, e);
}
}
}
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